Kaiyanwang
Adventurer
Nah, physical damage with a certain amount of avoidance and a stamina that, the higher level you get, the more supernatural or at least extraordinary (as in 3.5/PF, "Ex") it gets is fine. An "Ex" ability to keep going. See also falling from heights. After a while you are not human anymore and is FINE. This is why BTW I agree with those that advocate that higher level non-casters should have non-mundane abilities, I just disagree with timing and mechanics.The only thing that makes sense for people hp is Aura: a rapidly regenerating energy field that protects you from all but minor injuries, and even those heal pretty quickly, until depleted at which point you can take real damage that may kill or seriously wound you.
Back then, we had endless arguments on how a full HP character that is stabbed by a poisoned weapon and is affected by it, or even not affected, must have been grazed in the least.